CN204097961U - The structure of river gesture and poised stream main flow is led in a kind of control - Google Patents
The structure of river gesture and poised stream main flow is led in a kind of control Download PDFInfo
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- CN204097961U CN204097961U CN201420502953.3U CN201420502953U CN204097961U CN 204097961 U CN204097961 U CN 204097961U CN 201420502953 U CN201420502953 U CN 201420502953U CN 204097961 U CN204097961 U CN 204097961U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 230000003993 interaction Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000013049 sediment Substances 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000009991 scouring Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
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Abstract
The utility model discloses the structure that river gesture and poised stream main flow are led in a kind of control, comprising: the double tandem pile pier group that multiple pile pier structures that center position of mainstream is arranged along the river form; Wherein, described double tandem pile pier group is two pile pier structures is one group, and tandem arranges the structure of some groups.Structure disclosed in the utility model; by the three-dimension interaction effect of the pile group in river course major trough and current; local scour is produced to the riverbed around pile group; the talweg of further intensification and poised stream; more current are guided to come over and pledge allegiance to river course thalweg; thus away from the important protection zone in riverbank or river course, the control achieving river gesture is led and channel thread stable.
Description
Technical field
The utility model relates to hydraulic engineering technical field, particularly relates to the structure that river gesture and poised stream main flow are led in a kind of control.
Background technology
In order to poised river gesture, guarantee two sides safety, in river training works, management measure is led in normal employing channel revetment control.River gesture river control works conventional is at present near embankment or river shoal district arranges the hydraulic structures such as bank protection, shore protection, groynes, realizes the control to river gesture by the river control works of two sides.In the river arranging dyke; beach river control works is protected with hydraulic structure compositions such as bank protection, shore protection, groynes; adopt " with dam protect curved, with curved water conservancy diversion " renovation pattern; mainly utilize dash, choose stream, restraint the control water guide streams such as narrow overcurrent; the flow direction in engineering change river course is protected and led with seashore; control water guide stream, poised river gesture and protection seashore, thus protect the key area in riverbank or river course.Facts have proved, in the river course that bed downcutting is stronger, conventional art can realize leading the control of river gesture comparatively directly, effectively.The successfully utilization of measure on dangerous section's harnessing project is led in shore protection control, improves the efficacy of river engineering, effectively protects the safety of stream bank stability and flood wall.
But there is flood and the poor river course of riverbed impact resilience for frequent, current are to the erosion on riverbank and wash away very outstanding, often cause that bank slope collapse and main flow are de-slips and river gesture changes, cause the passive situation that dam bank engineering is frequently speedily carried out rescue work, jeopardize the safety in dyke and village, cities and towns, bring serious disaster and huge economic loss usually to people's productive life in littoral area.In Xinjiang region, some two sides, braided channel dykes are very weak, even do not have dyke, and how stablizing main flow is technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide the structure that river gesture and poised stream main flow are led in a kind of control; by the three-dimension interaction effect of the pile group in river course major trough and current; local scour is produced to the riverbed around pile group; the talweg of further intensification and poised stream; more current are guided to come over and pledge allegiance to river course thalweg; thus away from the important protection zone in riverbank or river course, the control achieving river gesture is led and channel thread stable.
The purpose of this utility model is achieved through the following technical solutions:
A structure for river gesture and poised stream main flow is led in control, comprising:
Along the river the double tandem pile pier group that multiple pile pier structures that center position of mainstream is arranged form;
Wherein, described double tandem pile pier group is two pile pier structures is one group, and tandem arranges the structure of some groups.
The technical scheme provided as can be seen from above-mentioned the utility model, by arranging double tandem pile pier group at korneforos heart position of mainstream, broad for river shoal, the riverbed of main flow instability, utilize the pile pier building of continuous tandem and current to the shaping action of bed configuration, form continuous print scour hole along downbeam and come the talweg position of poised stream by the control and guide function of pile pier group reinforcement to main flow, and the talweg position that formation continuous print scour hole carrys out poised stream is moulded again to bed configuration, reach the control and guide function strengthened main flow, improve overcurrent and the transportability of sediments of major trough, reduce Sediment Siltation, thus effectively control the stream of wandering stream main flow, the control achieving river gesture is led and channel thread stable.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 leads the schematic diagram of the structure of river gesture and poised stream main flow for a kind of control that the utility model embodiment provides;
Schematic diagram is arranged in the structural plan that Fig. 2 leads river gesture and poised stream main flow for a kind of control that the utility model embodiment provides;
In the double tandem pile group test that Fig. 3 provides for the utility model embodiment, 20 pile pier structures rushes dark schematic diagram;
Center line longitudinal plan in the double tandem pile group test that Fig. 4 provides for the utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection domain of the present utility model.
The scheme of the utility model embodiment is conceived to that river course pile pier causes riverbed, current scour local, degradation major trough is returned and led main flow, utilizes the interaction between many and current, the continuous scour hole causing bed scour to be formed, thus the thalweg point depth of water in increase river course.It is the interactional result in current and riverbed that pile pier in river course washes away, and the building such as pile pier, foundation pile changes local current motion structure, and river-bed deformation can occur in Around Buildings certain limit, generation is washed away.
The riverbed that, main flow broad for river shoal is unstable, utilize the pile pier building of continuous tandem and current to the shaping action of bed configuration, form continuous print scour hole along downbeam and come the talweg position of poised stream by the control and guide function of pile pier group reinforcement to main flow, and the talweg position that formation continuous print scour hole carrys out poised stream is moulded again to bed configuration, reach the control and guide function strengthened main flow, improve overcurrent and the transportability of sediments of major trough, reduce Sediment Siltation, thus effectively control the stream of wandering stream main flow.
When current are by pile pier, current flow section constriction, incoming flow produces local at the top punching place water surface of pile pier and stops up high, local pressure increase, produces to flow downward wash away riverbed in pile upstream face forward position.Meanwhile, current are along cylinder to river course central side turn of tidal stream, and on section, flow velocity is distorted, and produce very strong shear action, thus produce a series of horseshoe vortex.Walk around cylinder two rear flank when current to occur constantly to discharge wake flow vortex again when being separated.The spiral structure of these complexity causes current strongly to be pulsed, and washes away the bed surface silt near abutment, and the bed material started all is carried under one's arms by vortex and flowed away, local scour hole near final formation pile pier.
In addition, the left-right situs form of double-row pile utilizes influencing each other between two campsheds, the scour hole between intensification and anchor spike.Form in tandem along water (flow) direction tandem make current continuously with pile pier effect, the scour hole that front and back stake is formed is linked together, formation main flow talweg.
Embodiment
Fig. 1 leads the schematic diagram of the structure of river gesture and poised stream main flow for a kind of control that the utility model embodiment provides.As shown in Figure 1, this structure mainly comprises:
Along the river the double tandem pile pier group that multiple pile pier structures that center position of mainstream is arranged form;
Wherein, described double tandem pile pier group is two pile pier structures is one group, and tandem arranges the structure of some groups.
Further, in each group, the spacing of two pile pier structures is 3D to 6D, and between the group of tandem arrangement and group, spacing is 4D to 8D; Described D represents diameter or the catercorner length of pile pier structure.
Further, the cross section shapes of described pile pier structure comprises: circular, square or rectangular.
Further, the fixed form of pile pier structure comprises: deep embeded type, shallow embedding formula, unsettled disturbed flow type.
Further, described pile pier structure is plastics, bamboo, wood, concrete pile and/or iron composition.
For the ease of understanding the utility model further, be described further below in conjunction with accompanying drawing 2-4.
In the utility model embodiment, the principal character form of double tandem pile pier group is the form of the permeable building of double tandem, pile pier group at regular intervals spread pattern is arranged on korneforos heart position of mainstream, stable wash zone is formed by riverbed, current degradation pile group local, promote that more current return groove, stablize main flow direction, reduce the swing of main flow in river course.
As shown in Figure 2, double tandem pile pier group along the river center position of mainstream is arranged, described double tandem pile pier group is two pile pier structures is one group, and tandem arranges the structure (quantity in Fig. 2 only for ease of representing, can according to circumstances be arranged in real work) of some groups.
In the utility model embodiment, from the viewpoint of site operation, structural strength etc., diameter (or catercorner length) D of single pile pier structure can set with 1 ~ 2m.According to model testing compliance test result, pile spacing is independent separately from excessive then scour hole, is difficult to form band shape and washes away; Pile spacing is from too small, then between stake, flow rate of water flow is subject to larger resistance, and same scouring effect is undesirable.In each group, the spacing of two pile pier structures is 3D ~ 6D, and between the group of tandem arrangement and group, spacing is 4D ~ 8D.
In addition, under natural endowment, channel boundary is not straight, and main flow direction is also bending descending along river course.Therefore, can according to the smooth-going layout in tortuous direction of natural main flow in practice of construction.
Single pile pier feature cross-section form can adopt circle, square or rectangular.Normal conditions can adopt circle, the energy loss in the current of local can be reduced on the one hand, be conducive to current comparatively smoothly by pile group, reduce water flow impact pressure suffered by pile body, also better from the manufacturing process of pile body itself, the tension of pile body own, pressure, shearing and resistance to deformation aspect on the other hand.
The material of pile pier structure take generally concrete as main material, and also can adopt other material, available material of body of a pile comprises plastics stake, bamboo stake, timber, concrete pile, iron stake etc.In practice of construction, can utilize the techniques such as boring, vibration, hydraulic flushing in hole that depths, riverbed is directly inserted in prefabricated or fluid concrete stake.
According to the pile pier structurally-fixed mode in river course, the form of stake can be divided into several forms such as Deep Embedded Piles, shallow embedding stake, unsettled flow-disturbing stake.Deep Embedded Piles adopts by holing or the buried river course bed surface that is fixed on of the method such as piling on riverbed, and its Stability Analysis of Structures mainly relies on the embedded depth of foundation of pile.Unsettled flow-disturbing stake is then that pile is suspended among current, and bottom and bed surface do not adopt fixing connecting mode, but is connected with other fixed buildings by the part that pile epimere surfaces.Shallow embedding stake falls between, and bottom is fixed by more shallow buried depth, epimere being then fixedly connected of similar flow-disturbing stake.
According to silt physical model scouring effect demonstration, double tandem stake should adopt the form of Deep Embedded Piles, and stake more than bed surface both can be the high stake of the exposure water surface, also can be the latent stake form of stake top lower than the water surface.
On the other hand, in order to verify that the structure of river gesture and poised stream main flow is led in control that the present embodiment provides, and test.Silt physics modeling techniques is adopted to demonstrate the scouring effect of double tandem pile group in this test.Normal state series sediment model experiment is adopted according to model similar Design principle, series model is that a kind of dissimilar model of sediment movement that utilizes obtains a kind of method of test result by extension, obtains similar test achievement by utilizing the model of a series of incomplete similarity; Its practice is the normal state series model by means of different guide, by extending the scour hole of series model test prediction of result near-bed." river model test code " SL 99-2012, " water conservancy project (routine) model testing code " SL 155-2012 are all followed in test.
The influence factor that this testing program is considered comprises the buried depth degree (comprising Deep Embedded Piles, shallow embedding stake and unsettled flow-disturbing stake), pile group arrangement mode etc. of pile pier structure pitch, pile pier structure, refers to table 1:
According to each scheme result of the test, draw the following conclusions:
(1) suspension flow-disturbing, shallow embedding and buried three kinds of pile piers arrange form and all can cause local water flow variation, and the strongest with Deep Embedded Piles to the effect of bed surface silt local scour, shallow embedding stake is taken second place, and suspension stake is the most weak.
(2) by the test to piles with different distance and flow condition, model obtains when natural flow velocity 1.8m/s, pile spacing are from stake diameter for 4 times, the scour hole formed between the upstream and downstream pile pier of tandem stake can be linked to be banded scour trough, plays local degradation major trough, comes over and pledges allegiance to and stable main flow effect.But by upstream stake flow-disturbing with cover function influence, when the inflow angle of current and tandem stake is zero, define banded scour trough near the part tandem stake being positioned at upstream, the scouring intensity near the pile pier of downstream obviously weakens.
(3) from the scouring effect of different spread pattern, the effect of double tandem stake (scheme 5) is better than single tandem stake (scheme 4), leads suggestion in test adopt the form of double-row pile in prototype control.
Result of the test in such scheme 5 as shown in Figure 3-4, Fig. 3 be 20 pile pier structures rush dark schematic diagram; Wherein, A, B stake be respectively along direction, river course arrangement left bank, the stake of right row's tandem; Line longitudinal plan centered by Fig. 4.
The utility model embodiment is based on the guiding current thinking making current automatically concentrate by the thalweg in degradation main stem; utilize the flow regime of double tandem pile pier group building active adjustment and change flood; riverbed, degradation local is built by the tandem pile pier group being arranged on main flow area in river course; come over and pledge allegiance to main flow, stablize the talweg in main river; guide river change away from littoral essential industry and living area; protecting normal production and the life of the littoral regional people, is a kind of new approaches and the new method of river pattern control and river regulation.
In addition, the technology that main flow is led in the team control of double tandem pile pier is different from the river control works on conventional entity dam, utilizes pile pier building to change the flow regime of flood, positive guide and control new approaches and the new method of river change.Double tandem pile pier group has and once accomplishes, do not need to speedily carry out rescue work, utilize water flow mud-sand interaction control to lead the advantages such as river gesture, have that structure is simple, mechanization of building operation degree is high, application safety is reliable simultaneously, defence of need not speedily carrying out rescue work, take up an area advantages such as lacking, the shortcoming of traditional river training works passive protection can be made up to a certain extent.
This technology has filled up the research blank that pile group is stablized main flow and controlled river gesture to a certain extent, has larger application and promotional value.
The above; be only the utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (5)
1. a structure for river gesture and poised stream main flow is led in control, it is characterized in that, comprising:
Along the river the double tandem pile pier group that multiple pile pier structures that center position of mainstream is arranged form;
Wherein, described double tandem pile pier group is two pile pier structures is one group, and tandem arranges the structure of some groups.
2. structure according to claim 1, is characterized in that, in each group, the spacing of two pile pier structures is 3D to 6D, and between the group of tandem arrangement and group, spacing is 4D to 8D; Described D represents diameter or the catercorner length of pile pier structure.
3. structure according to claim 1 and 2, is characterized in that, the cross section shapes of described pile pier structure comprises: circular, square or rectangular.
4. structure according to claim 1 and 2, is characterized in that, the fixed form of pile pier structure comprises: deep embeded type, shallow embedding formula, unsettled disturbed flow type.
5. structure according to claim 1 and 2, is characterized in that, described pile pier structure is plastics, bamboo, wood, concrete pile and/or iron composition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420502953.3U CN204097961U (en) | 2014-09-02 | 2014-09-02 | The structure of river gesture and poised stream main flow is led in a kind of control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420502953.3U CN204097961U (en) | 2014-09-02 | 2014-09-02 | The structure of river gesture and poised stream main flow is led in a kind of control |
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| CN204097961U true CN204097961U (en) | 2015-01-14 |
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| CN201420502953.3U Expired - Fee Related CN204097961U (en) | 2014-09-02 | 2014-09-02 | The structure of river gesture and poised stream main flow is led in a kind of control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264626A (en) * | 2014-09-02 | 2015-01-07 | 中国水利水电科学研究院 | Structure for controlling and guiding river regime and stabilizing river mainstream |
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2014
- 2014-09-02 CN CN201420502953.3U patent/CN204097961U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264626A (en) * | 2014-09-02 | 2015-01-07 | 中国水利水电科学研究院 | Structure for controlling and guiding river regime and stabilizing river mainstream |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 |